Radiation is naturally present in our environment, as it has been since before the birth of this planet. In addition, radiation can be produced artificially, as in medical x-rays and microwaves for cooking. The various forms of radiation can be either benefical or harmful, depending on their use and control. For that reason, regulation of certain radioactive sources is necessary to ensure that people and the environment are protected from unnecessary or excessive exposures. For additional information, see the following topics:
Page Last Reviewed/Updated Friday, March 20, 2020